CHATTANOOGA, Tenn. (AP)  A man has been sentenced to 55 years in prison for killing six people and injuring others in 2015 when his tractor-trailer careened into stopped traffic on a Tennessee highway.

The Chattanooga Times Free Press reports Brewer apologized, and Poole said he appreciated the gesture but Brewer was a “dangerous offender.” Prosecutors said Brewer had methamphetamines in his system when he sped down Interstate 75 and barreled through the cars without braking, traveling 453 feet before his tractor-trailer stopped.

Brewer”s attorneys noted no responding officers said Brewer appeared under the influence and a state toxicologist admitted to contaminating Brewer”s blood test that was methamphetamine-positive. Brewer was convicted January of six counts of vehicular homicide, among other charges.